1/* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef SharedTimer_h 27#define SharedTimer_h 28 29#include <wtf/Noncopyable.h> 30 31namespace WebCore { 32 33 // Each thread has its own single instance of shared timer, which implements this interface. 34 // This instance is shared by all timers in the thread. 35 // Not intended to be used directly; use the Timer class instead. 36 class SharedTimer : public Noncopyable { 37 public: 38 virtual ~SharedTimer() {} 39 virtual void setFiredFunction(void (*)()) = 0; 40 41 // The fire time is relative to the classic POSIX epoch of January 1, 1970, 42 // as the result of currentTime() is. 43 virtual void setFireTime(double) = 0; 44 virtual void stop() = 0; 45 }; 46 47 48 // Implemented by port (since it provides the run loop for the main thread). 49 // FIXME: make ports implement MainThreadSharedTimer directly instead. 50 void setSharedTimerFiredFunction(void (*)()); 51 void setSharedTimerFireTime(double); 52 void stopSharedTimer(); 53 54 // Implementation of SharedTimer for the main thread. 55 class MainThreadSharedTimer : public SharedTimer { 56 public: 57 virtual void setFiredFunction(void (*function)()) 58 { 59 setSharedTimerFiredFunction(function); 60 } 61 62 virtual void setFireTime(double fireTime) 63 { 64 setSharedTimerFireTime(fireTime); 65 } 66 67 virtual void stop() 68 { 69 stopSharedTimer(); 70 } 71 }; 72 73} // namespace WebCore 74 75#endif // SharedTimer_h 76